I also like Python for this but it's an absolute PITA to distribute scripts that support lots of different versions of python or need any dependencies not in your distro's repos.
if [[ ${1:0:1} = '-' ]]; then
...
set --
Websearching for "bash bracket colon colon" something actually worked but it took a while. In a typed language, I'd just clicked a function and would have seen the docs, in an instant.
> from zero to a script that's production ready in like an hour with option support, help text, man pages, shell completion, signal handling that's portable to any system.
It seems you've been used Bash for quite a while. Then I'm guessing in your case, it's a good choice. Agreed that dependencies for Python or Deno or whatever else is annoying to have to include (the Deno runtime is sth like 50 - 60 MB if I remember correctly)